WadSmoosh

WadSmoosh (Doom Classic Complete) is a tool created by Jean-Paul LeBreton, first released on July 5, 2016. It is meant to be used with ZDoom-based source ports and the default Doom IWADs. When started, the application will search for the IWADs of Doom, Doom II, TNT: Evilution, The Plutonia Experiment, as well as files for the Master Levels, No Rest for the Living and SIGIL. Upon selecting either all or some of these, the program will then output a file called doom_complete.pk3, which contains all of the merged resources from the desired IWAD files into a single file that may itself be loaded as an IWAD, allowing all of the maps from the games to be loaded as episodes on the main menu.

WadSmoosh is built for high compatibility with other mods, and also includes the Ultra-Violence+ skill level, first introduced in the Unity port of Doom, that enables multiplayer-only things to be spawned in single player. When hosting a server on most source ports, Doom Classic Complete also allows players to play maps from various IWADs without needing to restart the server itself. The mod is thus very useful for certain mods that implement RPG elements. Additionally, the Master Levels portion of Doom Classic Complete forces a pistol start on all maps, to remain more faithful to the way the original maps were played.

The latest version of WadSmoosh is 1.31, released on August 16, 2023.